diff --git a/libinstpatch.spec b/libinstpatch.spec
index 7ab9735..f79e863 100644
--- a/libinstpatch.spec
+++ b/libinstpatch.spec
@@ -151,7 +151,7 @@ find examples -type f -name '*.py' -print -delete
 
 
 %files devel
-%{_includedir}/%{name}-%{so_version}
+%{_includedir}/%{name}-%{so_version}/
 %{_libdir}/%{name}-%{api_version}.so
 %{_libdir}/pkgconfig/%{name}-%{api_version}.pc